DS is 10 weeks old and starting to engage with his "gym" and kick/bat at things. We go on walks, practice tummy time, and I read books to him...but I'm struggling to figure out what else we should be doing during the days (I don't go back to work for a few weeks yet).

At what point should he be big enough for an "exersaucer" or jumper? He has pretty good head/neck and trunk control!

Where did you go and what did you do with your little baby? Bonus points if it's "safe" during the coming cold & flu season!